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Possible hardware fault.<br />
<br />
1. check CPU<br />
<br />
2. check memory<br />
<br />
3. check fans<br />
<br />
ESXi 5.1 is end of life, I would update to the latest and last version.<br />
<br />
Do you get a PSOD (Purple/Pink Screen of Death)?
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IT Professional

Jim Nicolis

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No Warming lights anywhere<br><br>I don't see it reboot just get back and its rebooted<br><br>in vSphere, everything is showing Ticked and Normal<br><br>Should I go and put a New USB Drive in with ESXi 6.0 which i have been testing in my LAB and seems happy on x3650m2<br><br><br><br>
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To say that ESXi 5.1 is end of life is an understatement. It went EOL August 2016. ESXi 5.5 is also EOL.
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I have just found BBU on Raid controller needs to be replaced as well would that be an issue maybe<br><br>I have raised another question but, am I better to remove it and can I do safely<br><br>I do have a second-hand battery that is not saying its faulty from an MR10i but seems to be the same Part Number for the M5015, Should I use that or leave off altogether<br><br>Maybe the issue would it
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That could certainly explain corrupt VMs, if data in cache, was not written when the host rebooted.<br />
<br />
because Cache was faulty, or not being backed up by the battery.<br />
<br />
That should not cause a reboot or restart of ESXi.
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Upgraded to ESXi 6.0 and although not certified with VMware all running very well
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<div class="content wysiwyg-content">
Hi Everyone,<br />
<br />
I have a ESXi 5.1 on x3650 M2 that is now Randomly restarting<br />
<br />
ESXi is running on a USB drive in the server<br />
<br />
It boots back up fine but has corrupted 2 VM's in rebooting and not sure why it's doing it<br />
<br />
The only thing we have done of late is replaced to failed hard drives in Raid which Synced up fine and Raid is now healthy<br />
<br />
ESXi is not running on that raid anyway, the only datastore<br />
<br />
Hope someone can point me in the right direction<br />
<br />
What Logfiles should I be looking at or upload here to see what its doing<br />
<br />
Thanks Adam
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Hi Everyone,

I have a ESXi 5.1 on x3650 M2 that is now Randomly restarting

ESXi is running on a USB drive in the server

It boots back up fine but has corrupted 2 VM's in rebooting and not sure why it's doing it

The only thing we have done of late is replaced to failed hard drives in Raid which Synced up fine and Raid is now healthy

ESXi is not running on that raid anyway, the only datastore

Hope someone can point me in the right direction

What Logfiles should I be looking at or upload here to see what its doing

Thanks Adam

VMware ESXi 5.1 Server keeps rebooting Randomly

RAID stands for Redundant Array of Independent Disks.

RAID is data storage technology that allows multiple drives to be used together as a single virtual drive for reasons such as fault tolerance, reliability and performance. 

There are several different levels of RAID that determine how the data is stored and the level of redundancy achieved across the drives.

RAID

VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.

VMware

Storage devices include any device used for storing and retrieving digital information. Hard disk drives (HDDs) use one or more rigid ("hard") rapidly rotating disks (platters) coated with magnetic material. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored or retrieved in any order and not only sequentially. The primary competing technology for secondary storage is flash memory in the form of solid-state drives (SSDs), but HDDs remain the dominant medium for secondary storage due to advantages in price per bit and per-device recording capacity. CD-RW (Compact Disc-ReWritable) is a digital optical disc storage format that allows information to be stored outside the mechanical HDD.

Storage Hardware

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.